GaAs Transmitter

17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD Features Sub-harmonic Transmitter Integrated IR Mixer, LO Buffer & Output Amplifier +13 dBm P1dB 2.0 dBm LO Drive Level 20.0 dB Image Rejection, 9.0 dB Conversion Gain 7x7 mm, QFN General Description Mimix Broadband’s 17.0-25.0 GHz GaAs MMIC transmitter has a +13.0 dBm output P1dB and 20.0 dB image rejection across the band. This device is an image reject sub-harmonic anti-parallel diode mixer followed by a balanced two stage output amplifier and includes an integrated LO buffer amplifier. The image reject mixer reduces the need for unwanted sideband filtering before the power amplifier. The use of a sub-harmonic mixer makes the provision of the LO easier than for fundamental mixers at these frequencies. I and Q mixer inputs are provided and an external 90 degree hybrid is required to select the desired sideband. This MMIC uses Mimix Broadband’s 0.15 µm GaAs PHEMT device model technology, and is based upon electron beam lithography to ensure high repeatability and uniformity. The device comes in a 7x7mm QFN surface mount laminate package that is RoHS compliant. This device is well suited for Millimeter-wave Point-to-Point Radio, LMDS, SATCOM and VSAT applications. Absolute Maximum Ratings Supply Voltage (Vd) Supply Current (Id1,Id2) Gate Bias Voltage (Vg) Input Power (IF Pin) Storage Temperature (Tstg) Operating Temperature (Ta) Channel Temperature (Tch) +5.0 VDC 320, 165 mA +0.5 VDC 0.0 dBm -65 to +165 OC -55 to MTTF Table1 MTTF Table 1 (1) Channel temperature affects a device's MTTF. It is recommended to keep channel temperature as low as possible for maximum life. Electrical Characteristics (Ambient Temperature T = 25o C) Parameter Frequency Range (RF) Upper Side Band Frequency Range (RF) Lower Side Band Frequency Range (LO) Frequency Range (IF) Output Return Loss RF (S22) Small Signal Conversion Gain IF/RF (S21) LO Input Drive (PLO) Image Rejection 2xLO Leakage @ RF Output Third Order Intercept (OIP3) Drain Bias Voltage (Vd1) Drain Bias Voltage (Vd2) Gate Bias Voltage (Vg1,2) Supply Current (Id1) (Vd1=4.0V, Vg=-0.1V Typical) Supply Current (Id2) (Vd2=4.0V, Vg=-0.1V Typical) Units GHz GHz GHz GHz dB dB dBm dBc dBm dBm VDC VDC VDC mA mA Min. 17.0 17.0 7.0 DC -1.2 Typ. 14.0 9.0 +2.0 20.0 -10.0 +23.0 +4.0 +4.0 -0.1 230 116 Max. 25.0 21.0 14.0 3.0 +4.5 +4.5 +0.3 280 140 Page 1 of 7 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD Transmitter Measurements XU1002-QD, USB Conversion Gain (dB) and Image Rejection (dBc) 15 10 5 CG (dB) and IR (dBc) CG (dB) and IR (dBc) 0 -5 Image Reject -10 -15 -20 -25 -30 17 18 19 20 21 22 23 24 25 RF (GHz) [IF=2GHz] Conv. Gain 15 10 5 0 -5 -10 -15 -20 -25 -30 17 17.5 18 18.5 19 19.5 20 20.5 21 RF (GHz) [IF=2GHz] Conv. Gain Image Reject XU1002-QD, LSB Conversion Gain (dB) and Image Rejection (dBc) XU1002-QD, USB P1dB Compression Point (dBm) 16 14 12 P1dB (dBm) 10 8 6 4 2 0 17 18 19 20 21 22 23 24 25 RF (GHz) [IF=2GHz] LO@RF Leakage (dBm) 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 7 8 XU1002-QD, LO Leakage at RF (dBm) 2xLO 1xLO 9 LO (GHz) 10 11 12 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 2 of 7 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD Physical Dimensions Board Layout Pin Designation VD1 44 1 2 3 4 5 6 7 8 9 10 11 12 13 VG1 14 15 VG2 16 17 18 IF1_IN 19 20 21 22 RF Output Amp Image Reject Mixer LO Buffer 43 42 41 VD2 40 39 38 IF2_IN 37 36 35 34 33 XU1002-QD 32 31 30 29 28 27 26 25 24 23 GND RF OUT GND GND LO IN GND Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 3 of 7 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD Application Circuit VD2 10 nF 1uF VD1 1uF 10 nF IF2_IN RF OUT LO IN 50 Ohm Line 50 Ohm Line VG1 1uF 10 nF VG2 IF1_IN 1uF 10 nF Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 4 of 7 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD App Note [1] Biasing - This device is operated by separately biasing Vd1 and Vd2 with Vd1=4.0V, Id1=230mA and Vd2=4.0V, Id2=116mA. It is recommended to use active biasing to keep the currents constant as the RF power and temperature vary; this gives the most reproducible results. Depending on the supply voltage available and the power dissipation constraints, the bias circuit may be a single transistor or a low power operational amplifier, with a low value resistor in series with the drain supply used to sense the current. The gate of the pHEMT is controlled to maintain correct drain current and thus drain voltage. The typical gate voltage needed to do this is -0.1V. Typically the gate is protected with Silicon diodes to limit the applied voltage. Also, make sure to sequence the applied voltage to ensure negative gate bias is available before applying the positive drain supply. MTTF Tables MTTF is calculated from accelerated life-time data of single devices and assumes an isothermal back-plate. MTTF vs. Backplate Temperature 1.0E+09 1.0E+08 1.0E+07 MTTF (Years) 1.0E+06 1.0E+05 1.0E+04 1.0E+03 1.0E+02 1.0E+01 1.0E+00 20 30 40 50 60 70 80 90 100 110 Temperature (degrees) Bias Conditions: Vd1=4.0V, Vd2=4.0V, Id1=230 mA, Id2=116 mA Typical Application XU1002-QD Sideband Reject XB1004 XP1013 IF IN 2 GHz RF Out 17.7-23.6 GHz LO(+2.0dBm) 7.85-10.8 GHz (USB Operation) 9.85-10.85 GHz (LSB Operation) Mimix Broadband MMIC-based 19.0-26.0 GHz Transmitter Block Diagram (Changing LO and IF frequencies as required allows design to operate as high as 26 GHz) Mimix Broadband's 17.0-25.0 GHz XU1002-QD GaAs MMIC Transmitter can be used in saturated radio applications and linear modulation schemes up to 16 QAM. The transmitter can be used in upper and lower sideband applications from 19.0-26.0 GHz. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 5 of 7 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD App Note [3] USB/LSB Selection - LSB USB For Upper Side Band operation (USB): With IF1 and IF2 connected to the direct port (0º) and coupled port (90º) respectively as shown in the diagram, the USB signal will reside on the isolated port. The input port must be loaded with 50 ohms. IF2 IF1 For Lower Side Band operation (LSB): With IF1 and IF2 connected to the direct port (0º) and coupled port (90 º) respectively as shown in the diagram, the LSB signal will reside on the input port. The isolated port must be loaded with 50 ohms. An alternate method of Selection of USB or LSB: USB LSB In Phase Combiner In Phase Combiner -90 o -90o IF2 IF1 IF2 IF1 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 6 of 7 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 17.0-25.0 GHz GaAs Transmitter QFN, 7x7mm November 2006 - Rev 21-Nov-06 U1002-QD CAUTION! - Mimix Broadband MMIC Products contain gallium arsenide (GaAs) which can be hazardous to the human body and the environment. For safety, observe the following procedures: Do not ingest. Do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical processing as these by-products are dangerous to the human body if inhaled, ingested, or swallowed. Observe government laws and company regulations when discarding this product. This product must be discarded in accordance with methods specified by applicable hazardous waste procedures. Life Support Policy - Mimix Broadband's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President and General Counsel of Mimix Broadband. As used herein: (1) Life support devices or systems